Saw-swaging device



(No Model.) 2 Shets-Sheet 1.

P. R. WARD.

SAW SWAGING DEVICE. No. 350,853. Patented Oct. 12, 1886.

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(No Model.) 2 Sheets-Sh ee t 2.

P. R. WARD.

SAW SWAGING DEVICE. No. 350,853. Patented Oct. 12, 1886.

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N. PETERS. Pholo-Llthogmpher. Washington. KLC.

Nrren SrA'res A'IENT PHILIP B. WVARD, OF QUINCY, ILLINOIS.

SAW-SWAGING DEVICE.

SPECIFICATION forming part of Letters Patent No. 350,853, dated October 12, 1886.

Application filed March 3, 1886.

T0 aZZ whom, it may concern.-

Be it known that I, PHILIP B. \VARD, a citizen of the United States, residing at Quincy, in the county of Adams and State of Illinois, have invented a new and useful Improvement in Saw-Swaging Machines, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to an improvement in saw-swaging machines; and it consists in the peculiar construction and combination of parts, that will be more fully set forth hereinafter, and particularly pointed out in the claims.

In the drawings, Figure l is a side elevation of my invention. Fig. 2 is a similar view of the opposite side. Fig. 3is a verti cal sectional View. Fig. 4. is a front elevation. Fig. 5 is a detailed elevation, partlyin section, showing the mandrel and the die in another position than that shown in Fig. 3.

A represents the frame of the machine, Which consists of the vertical side or plate B and the plate 0, which is secured at its upper end to a flange, D, that projects from one side of the plate B. From the front upper corner of the plate B projects the horizontal arm E, which extends at a right angle from the rear side of the said plate, and to the outer end of this arm is pivoted a hand-lever, F, which lever is provided at a suitable distance from its fulcrum with a slot, f. Ears G project from the front side of the plate B, at the upper end thereof, and in the said cars is journaled a horizontal shaft, H, which carries a cam-wheel, I, having a concentric face, 2', and to the said shaft is secured a rocking arm, h, which is connected to the hand-lever F by means of a bolt, k, that extends through the outer end of the said rocking arm and enters the slot f. Near the lower ends of the plates B and O, on the opposing faces thereof, are formed annular recesses K, in which is journaled the circular head of a cam-lever, L. An arm, Z,

projects from the front side of the circular head, and extends out between the plates B and O, and is provided at its outer end and its rear side with a projecting ear, Z, whichextends at right angles to the said arm, and through which car passes an adjusting tappetscrew, Z

M represents a connecting -rod, which is Serial No. 193,893. (No model.)

formed of three sections, m, m, and W. The sections or and m are pivoted together, as at m and the said section m 'is connected to the handlever by a pivotal bolt, N. The lower section, m is pivoted to the lower end of the section m, and the said section at is provided with a slot, m". A pivotal bolt, Z, extends from the rear side of the arm Z and enters the slot m", and thereby connects the lower end of the connecting-rod M with the arm Z of the cam-lever. The circularhead of the camlever is formed, preferably, of a single piece ofmetal having its central portion cut away to form the circular side plates, L, in the uppersides of which are made concentric alligned openings L In the centres of the said plates, and communicating with the central portion of the openings L are made rectangular openings L, in which is inserted a rectangular die, 0, which extends across the center of the circular head. The face or operating portion of the die is made rounding or convex on its front side, as at 0, and the rear side of the face of the die is made plain, as at 0, and forms a suitable angle. The rear side of the convex portion of the die is slightly higher than the front side of the plain portion thereof, thereby forming the shoulder 0. The under side of the die, at the central portion thereof, is cut away, as at 0 for the purpose which Will be hereinafter set forth.

R represents a rock-shaft, which is j ournaled transversely in the side plates, B O, and passes through the concentric opening L in the circular die-head. An arm, It, extends from the upper side of that portion of the rock-shaft which is between the plates B and O, and through the center of the rock-shaft is made a circular opening, R", in which is inserted a movable mandrel, S. A wedge-shaped key, R passes transversely through an opening which is made in the upperend of the arm B, and the said key bears on the upper end of the movable mandrel. By moving the key in or out the mandrel may be adjusted in or out from the shaft B, so as to cause the face of the said mandrel to be adjusted with relation to the said shaft. From the inner end of the The outer end of this lever is provided with an ear, R whichv extends from its front side and against .which the tappet-screw Z" strikes when the arm Z is lowered.

From the rear side of the plate B project brackets b and b, which are arranged, respectively, one above and the other below the lever B, and through the said brackets extend setscrews b", which limit the movement of the said lever 3*. A coiled extensile spring, b bears between the lower side of the leverR and the upper side of the bracket b, so as to raise the lever R normally to the position shown in solid lines in Figs. 2 and 4t.

From the inner side of the plate B, near the lower end thereof, projects a horizontal stud, T, which extends through one of the openings L in the circular die-head, and has its inner end roughened or corrugated, as at if.

U represents a horizontal bolt, which extends transversely through the plates B and 0, above the circular heads of the die-lever, and on the front end of this bolt, which projects beyond the front side of the plate 0, is-

secured a yoke, U, made substantially in the shape of the letter U,and having parallel arms which approach the plate 0. The ends of these arms are concaved or hollowed, as at U.

- V represents a lever, which is provided near one end with an opening, V, through which the front end of the bolt U passes, and the said lever has laterally-projecting trunnions V, which bear in the concaved ends of the arms of the yoke and form the fulcrum for the lever. The upper end of the lever V passes through and works in a guide-keeper, G, which projects from the upper end of the plate (7, and the said lever also carries an anti-friction roller, V, which bears against the cam I. To the lower end of the lever V is secured a horizontally-projecting stud, T, which aligns with the stud T and passes through one of the openings L of the circular die-head, and is also pro- 'vided on its outer end with the corrugated or roughened surface.

* W represents a flat spring, which has one end secured to the plate 0, and the other end of which bears against the lower end of the lever V, so as to normally hold the said lever in the position shown in Fig. 4, and move the stud T from the stud T.

X. represents an arm, which is provided at one end with an extension, X, which projects at right angles from the arm, and the latter is also provided with the longitudinal slot X A set-screw, Z, passes through the slot. and enters the plate B on the front side thereof, near its upper right-hand corner, and thus secures the arm X to the said plate, and enables the arm to be clamped thereto at any desired adjustment.

a represents a stop-plate, which is provided with a longitudinal slot, a. This stop-plate is secured to the circular die-head, between theplates L thereof, by means of a set-screw, a, and the rear side of the said plate extends side of the stop-plate a.

toward the converging or approaching portions of the mandrel and the die. By means of the set-screw and the slot previously described the plate may be adjusted, as will be readily understood.

The operation of my invention is as follows: The machine is secured in a vertical position to a post or work-bench or other suitable support. The hand-lever F is normally raised .to the position shown in Fig. 4. The saw to be swaged has its teeth inserted between the opposing studs Tand T, and one of the teeth thereof rests betweenthe die and the mandrel, and the point thereof bears against the rear The arm X bears against the toothed edge of the saw and assists in maintaining the saw in position. The hand-lever F is then depressed by the left hand of the operator, who holds and maintains the saw in position with his right hand. The initial movement of the hand-lever causes the arm h to partly rotate the rock-shaft H, and thereby move the cam I, which causes the roller V of the lever V to move outwardly onto the, concentric face of the cam I, and thereby move the lever, so as to cause the stud T to move toward the stud T and clamp the saw rigidly between the said studs and hold the saw firmly in position while being swaged. Continued movement of the lever F in its descent causes the lower section of the connecting-rod M, by reason of its slot 112*, to move down on the bolt Z until the upper end of the said slot bears against the said bolt, which depresses the arm Z. and causes the circular diehead to partly rotate. The convex portion 0 of the die, which bears against the face of the saw-tooth, which is inserted between it and the mandrel by this movement, concaves the .said face of the tooth, until the convex portion of the die passes beyond the front of the tooth, and thereby broadens or swages the point of the tooth, and as the die-head continucs to move during the continued operation or movement of the hand-lever the point of the saw-tooth bears behind theshoulder 0 and the plain surface 0 of the die comes in contact with the face of the tooth. By this time the arm Z in its descent causes the tappetscrew Z to strike against the upper side of the ear BF of the mandrel-lever R, which thereby causes the said lever to partly rotate therook shaft R and cause the mandrel to bear against the upper side of the saw-tooth and subject it to pressure between the mandrel and the plane face of the die, and thereby straighten out the saw-tooth and remove the concave or depression which is made in the face thereof by .the convex portion of the die in its initial movement. which causes the clamping-studs T and T to disengage the saw-tooth and permit the next succeeding tooth to be inserted between the die andthe mandrel, when the operation is proceeded. with as before. The central portion of the die is cut away, as hereinbefore The hand-lever F is then raised,

described, in order to permit it to clear the front of the saw-tooth when the die-head is partly turned.

Having thus described my invention, I claim 1. The combination, in a saw-swaging machine, of the revoluble die-head carrying the die and the rock-shaft R, having the mandrel, substantially as described.

2. The combination, in a saw-swaging niachine, of the die and the rock-shaft It, having the adjustable mandrel, substantially as de scribed.

3. The combination, in a saw-swaging machine, of the die, the rock-shaft having the adjustable mandrel, and the key for moving the mandrel in or out from the rock-shaft, substantially as described.

4. The combination, in a saw-swaging machine, of the mandrel, the revoluble die-head carrying the die,aud having the stop a, for the purpose set forth, substantially as described.

5. The combination, in a saw-swaging machine, ot' the mandrel, the revoluble diehead having the die, and the adjustable stop-plate a, substantially asdescribed.

6. The combination, in a saw-swaging machine, ot' the mandrel, the revoluble die-head carrying the die, the slotted adjustable stopplate a, and the set-screw passing through the said slotted stop-plate to secure the latter to the die-head, substantially as described.

7. The combination, in a saw-swaging machine, of the rock-shaft It, carrying the mair drel, and the revoluble die-head carrying the die, the latter being provided with the convex portion 0 and the plain portion 0, substantially as described.

8. The combination, in a saw-swaging ma-.

having the die, and the arm or lever Z, substantially as described.

9. The combination, in a saw-swaging ma chine, of the rock-shaft R, having the mandrel and the lever B", and the revoluble die-head having the die and the arm or lever Z, the said arm having the tappct for striking the lever P5, to cause the said lever B and the lever Z to move simultaneously during a portion of the movement of the lever Z, substantially as described.

10. The combination, in a saw-swaging machine, of the die, the rock-shaft having the mandrel, the clamp-studs T and T, for securing the saw-tooth in place between the die and the mandrel, and means for operating the said clampingstuds and the die and the mandrel,

substantially as described.

11. The combination, in a saw-swaging ma chine, of the revoluble die-head having the die and the tappetarm Z, the rock-shaftR, having the mandrel and the arm R, the stud T, secured to the frame, the hand-lever F, the slotted connecting-rod connecting the said hand-lever with the arm Z, the rock-shaft H, having the arm it connected to the hand-lever and the cam I, and the pivoted lever V, bearing on the said cam, and having the stud T opposing the stud T, whereby when the handlever is moved the studs T and T first clamp the saw in place, and the die and mandrel are then operated on the tooth to swage the latter, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

PHILIP R. WARD.

Witnesses CHAS. L. Homumx, JOHN M. FULTZ. 

